Why choose Chalco?
Chalco Aluminum has successfully met the requirements of the automotive IATF16949 standard audited by BSI (British Standards Institution). This achievement ensures that Chalco Aluminum is compliant with quality standards, enabling it to cater to the ever-expanding automotive product market and foster high-quality development.
Chalco Aluminum proudly serves prominent new energy automobile manufacturers including Tesla, Ford, Shanghai Automobile, Weilai Automobile, Beiqi New Energy, and Changan Automobile. In addition, Chalco Aluminum provides certified automotive plate materials for various vehicle models.
Comman alloys of clad aluminium tubes and temper
| Cladding layer | Core material | Clad Aluminium | Temper |
|
4045 4343 7072 anti-corrosion layers added with zinc as needed |
3003 3305 |
4045/3003 | H14 H16 H18 |
| 4045/3003/4045 | |||
| 4045/3003/7072 | |||
| 4343/3003/4343 | |||
| 4343/3003 | |||
| 4343/3003/7072 | |||
| 4343/3005/7072 |
Specifications of clad aluminium welded tubes
| Class | Cross-Section /mm | |||||
| Major axis A | Minor axis B | Side height C | Corner Radius R | Outside diameter D | Room thickness T | |
| Radiator oval tube | 12-42 | 1.35-2.7 | 1.22.5 | 1/2 of the side height | - | 0.22-0.45 |
| Oil cooler oval tube | 12-80 | 2.70-6.00 | 2.50-5.80 | - | 0.40-0.80 | |
| Intercooler rectangular tube | 25-120 | 4.0-11.0 | 3.4-10.4 | - | 0.40-0.60 | |
| Parallel Flow Aluminium Round tube | - | - | - | ≥2.5 | 18-34 | 1.0-1.6 |
In addition to regular profiles such as round tubes, elliptical tubes, and rectangular tubes, we also offer special-shaped tubes.
If you have any requirements, you can click the contact button to tell us your specific requirements.
Deviation in cross-sectional dimensions
| Class | cross-sectional /mm | |||||
| Major axis A | Minor axis B | Side height C | Corner radius R | Outside diameter D | Room thickness T | |
| Radiator oval tube | ±0.05 | ±0.10 | ±0.05 | 1/2 of the side height | - | ±0.01 |
| Oil cooler oval tube | ±0.05 | ±0.10 | ±0.05 | - | ±0.02 | |
| Intercooler rectangular tube | ±0.05 | ±0.25 | ±0.05 | ±0.03 | - | ±0.02 |
| Parallel Flow Aluminium Round tube | - | - | - | ±0.05 | ±25 | ±0.05 |
Length deviation of clad aluminium welded tubes
| Length mm | Length deviation mm |
| <1000 | ±0.5 |
| ≥1000 | ±1.0 |
Burst pressure of clad aluminium welded tubes
| Burst pressure | |
| STD Min | 140Kg/cm2 |
| Actual Min | 153 |
| Actual AVG. | 156 |
| Actual Max | 159 |
Other property of clad aluminium welded tube
| Other property | |
| Tensile strength | ≥120 Mpa |
| Elongation | ≥2% |
| Weld reinforcement | ≤0.3 mm |
| Cutting burr height | ≤0.10 mm |
| Side bend per meter of the welded tube | ≤1 mm |
| Curvature per meter of the welded tube | ≤1 mm |
Cladding aluminium tube is mainly used in condensers, oil coolers, including automotive refrigerators, new energy vehicles, home appliance air conditioners, construction machinery, spacecraft mooring and other heat exchanger cores.
